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ACI-ASTM CB7Cu-2 Steel vs. Grade CX2MW Nickel

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while grade CX2MW nickel belongs to the nickel alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is grade CX2MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 5.7 to 11
34
Fatigue Strength, MPa 420 to 590
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
84
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
620
Tensile Strength: Yield (Proof), MPa 760 to 1180
350

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Melting Completion (Liquidus), °C 1430
1550
Melting Onset (Solidus), °C 1380
1490
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 17
10
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
65
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.6
12
Embodied Energy, MJ/kg 38
170
Embodied Water, L/kg 130
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
180
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 34 to 48
19
Strength to Weight: Bending, points 28 to 35
18
Thermal Diffusivity, mm2/s 4.6
2.7
Thermal Shock Resistance, points 32 to 45
17

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.020
Chromium (Cr), % 14 to 15.5
20 to 22.5
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
2.0 to 6.0
Manganese (Mn), % 0 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
12.5 to 14.5
Nickel (Ni), % 4.5 to 5.5
51.3 to 63
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35